<template>
  <div class="home" style="padding: 10px">
    <!--    功能区域-->
    <div style="margin: 10px 0">
      <el-button type="primary" @click="add">新增</el-button>
      <el-button type="primary">导入</el-button>
      <el-button type="primary">导出</el-button>
    </div>
    <!--    搜索区域-->
    <div style="margin: 10px 0">
      <el-input v-model="search" @input="onInput" style="width: 20%;" clearable placeholder="请输入关键字"/>
      <el-button type="primary" @click="load" style="margin-left: 5px">查询</el-button>
    </div>
    <!--    表格区域-->
    <el-table :data="tableData" border stripe style="width: 100%">
      <el-table-column prop="id" label="ID" sortable/>
      <el-table-column prop="title" label="标题"/>
      <el-table-column prop="author" label="作者"/>
      <el-table-column prop="time" label="时间"/>


      <el-table-column label="操作">
        <template #default="scope">
          <el-button size="small" @click="details(scope.row)"
          >详情
          </el-button>
          <el-button size="small" @click="handleEdit(scope.row)"
          >编辑
          </el-button>
          <el-popconfirm title="确定删除吗?" @confirm="handleDelete(scope.row.id)">
            <template #reference>
              <el-button
                  size="small"
                  type="danger"
              >删除
              </el-button>
            </template>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>

    <!--    分页-->
    <div style="margin: 10px 0">
      <el-pagination
          :currentPage="currentPage"
          :page-sizes="[5,10,20]"
          :page-size="pageSize"
          :small="small"
          :disabled="disabled"
          :background="background"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
      >
      </el-pagination>

      <!--      弹窗-->

    </div>
    <el-dialog
        title="新增"
        v-model="dialogVisible"
        width="50%"
    >

      <el-form :model="form" label-width="120px">
        <el-form-item label="标题">
          <el-input v-model="form.title" style="width: 80%;"></el-input>
        </el-form-item>
        <div id="div1"></div>
        <!--        <el-form-item label="内容">-->
        <!--          <el-input v-model="form.content" style="width: 80%;"></el-input>-->
        <!--        </el-form-item>-->


      </el-form>

      <template #footer>
          <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取消</el-button>
            <el-button type="primary" @click="save">确定</el-button>
          </span>
      </template>
    </el-dialog>

    <el-dialog v-model="vis" title="详情" width="50%" @close="vis=false">
      <el-card>
        <div v-html="detail.text" style="min-height: 400px"></div>
      </el-card>
    </el-dialog>
  </div>
</template>

<script>
import E from 'wangeditor'
import request from "@/utils/request";

let editor;

export default {
  name: 'News',
  components: {},
  data() {
    return {
      form: {},
      dialogVisible: false,
      serch: '',
      currentPage: 1,
      pageSize: "10",
      total: 0,
      tableData: [],
      vis: false,
      detail: {}
    }
  },
  //生命周期函数
  created() {
    //调用load()
    this.load()
  },

  methods: {

    filesUploadSuccess(res) {
      console.log(res)
      this.form.cover = res.data
    },
    details(row) {
      this.detail = row
      this.vis = true
    },
    onInput() {
      this.$forceUpdate();
    },
    load() {
      //传入三个参数 get请求不能传对象
      request.get("/news", {
        params: {
          pageNum: this.currentPage,
          pageSize: this.pageSize,
          search: this.search
        }
      }).then(res => {
        this.tableData = res.data.records;
        //实现前端显示总条数
        this.total = res.data.total;
        // console.log(res)
      })
    },
    add() {
      //打开弹窗
      this.dialogVisible = true;
      //清空
      this.form = {}
      if (this.$refs['upload']) {
        this.$refs['upload'].clearFiles()//清除历史文件
      }

      //处理未来元素 因为弹窗异步加载的 也可以通过设置定时器解决
      this.$nextTick(() => {
        //关联弹窗里的div 新增wangEditor对象
        editor = new E('#div1')

        //可以上传本地图片 注意api中规定接口返回必须为JSON格式
        editor.config.uploadImgServer = 'http://localhost:9090/files/editor/upload'
        editor.config.uploadFileName = "file"

        editor.create()
      })
    },
    //点击确认后保存到后台
    save() {
      //获取编辑器里的值并赋值给text字段
      this.form.text = editor.txt.html()

      //如果id存在 执行更新操作  否则执行新增操作
      if (this.form.id) {//更新
        request.put("/news", this.form).then(res => {
          //根据状态码判断 0为成功 这里用了elmentui 的提示框
          if (res.code === '0') {
            this.$message({
              type: "success",
              message: "更新成功"
            })
          } else {
            this.$message({
              type: "error",
              message: res.msg
            })
          }

          this.load()//刷新表格数据
          this.dialogVisible = false //关闭弹窗
        })
      } else {//新增
        //自动获取autor:新增news时获取当前sessionStorage的user 并把user的nickName赋值给author
        let userStr = sessionStorage.getItem("user")
        let user = JSON.parse(userStr)
        this.form.author = user.nickName

        request.post("/news", this.form).then(res => {
          if (res.code === '0') {
            this.$message({
              type: "success",
              message: "新增成功"
            })
          } else {
            this.$message({
              type: "error",
              message: res.msg
            })
          }

          this.load()//刷新表格数据
          this.dialogVisible = false //关闭弹窗
        })
      }

    },
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row));
      // console.log(this.form)
      this.dialogVisible = true
      //处理未来元素 因为弹窗异步加载的 也可以通过设置定时器解决
      this.$nextTick(() => {
        //关联弹窗里的div 新增wangEditor对象
        editor = new E('#div1')
        editor.create()
        editor.txt.html(row.text)//传入原来的内容
      })
    },
    handleDelete(id) {
      request.delete("/news/" + id).then(res => {
        if (res.code === '0') {
          this.$message({
            type: "success",
            message: "删除成功"
          })
        } else {
          this.$message({
            type: "error",
            message: res.msg
          })
        }

        this.load()//刷新表格数据
      })
    },
    handleSizeChange(pageSize) {
      this.pageSize = pageSize
      this.load();
    },
    handleCurrentChange(currentPage) {
      this.currentPage = currentPage
      this.load();
    }
  }
}
</script>


<style scoped>
.demo-image__error .image-slot {
  font-size: 30px;
}

.demo-image__error .image-slot .el-icon {
  font-size: 30px;
}

.demo-image__error .el-image {
  width: 100%;
  height: 100%;
}
</style>
